1. which equation would represent the line with a slope of zero and the point (2,4)? x = 2 x = 4 y = 2 y = 4

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Which expression is equivalent to 2x^2+7x+4?

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi